5.10.3.3 · Safe Use Zones For all play equipment that is thirty (30) inches or higher from the ground, including climbing equipment, slides, swings and other similar equipment, the licensee shall ensure that the surface under and around the equipment, including recommended use zones, is of approved resilient material that protects children if they fall. * Materials in the use zone shall consist of wood chips, pea stone, mulch, engineered wood fibers, sand, safety-tested shredded or rubber like material or rubber mats designed for protective cushioning; * Materials used in the use zone shall follow the recommendations listed in the most recent publication of U.S. Consumer Product Safety Commission's Public Playground Safety Handbook regarding critical depth of tested materials determined by the height of the highest climbing surface of the equipment; * Materials used in the use zone shall be installed and maintained according to the manufacturer's instructions; * If the loose material such as sand, mulch, or shredded rubber is used in use zones, the licensee shall ensure that the material is raked regularly and replenished to maintain depth and resilience; and * If the resilient material in use zones freezes, staff shall ensure that children will not play on the equipment until the resilient material has thawed and is once again resilient.